CMX264D5 データシートの表示（PDF） - MX-COM Inc
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CMX264D5 Datasheet PDF : 22 Pages
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Frequency Domain Split-Band Scrambler
12
CMX264 Advance Information
5.2 Input Anti-Alias and Output Smoothing Filters
5.2.1 Input Anti-Alias Filtering
The internal circuitry of the device uses sampled techniques and so anti-alias filtering and post-filtering
(smoothing) may be required.
Input anti-alias filtering is supplied on chip at the MICIN and RXIN inputs. The filtering is first order with a
corner frequency of 25kHz.
Possible alias frequencies are:
With input pre-emphasis selected
63.337kHz
With input pre-emphasis not selected
85.261kHz
63.337kHz
52.780kHz
44.336kHz
184.734kHz
(Split point 1)
(Split point 2 and clear mode)
(Split point 3)
(Split point 4)
(All split points)
5.2.2 Output Smoothing
All output buffers are sampled circuits clocked at 63.337kHz but no post-filtering is provided on chip. This is
not included in this product as such circuitry is normally included elsewhere, so it may be necessary for the
host equipment to provide this filtering either to comply with transmission requirements or to prevent aliasing
within other sampled circuits in the system.
6 Performance Specification
6.1 Electrical Performance
6.1.1 Absolute Maximum Ratings
Exceeding these maximum ratings can result in damage to the device.
Supply (VDD - VSS)
Voltage on any pin to VSS
Current into or out of VDD and VSS pins
Current into or out of any other pin
D5 Package
Total Allowable Power Dissipation at TAMB = 25°C
Derating above 25°C
Storage Temperature
Operating Temperature
Min.
-0.3
-0.3
-30
-20
-55
-40
Max.
7.0
VDD + 0.3
+30
+20
550
9
+125
+85
Units
V
V
mA
mA
mW
mW/°C above 25°C
°C
°C
6.1.2 Operating Limits
Correct operation of the device outside these limits is not implied.
Supply (VDD - VSS)
Operating Temperature
Xtal Frequency
Notes
Min.
2.7
-40
4.43229
Max.
3.75
+85
4.43495
Units
V
°C
MHz
2000 MX-COM, Inc.
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
Doc. # 20480210.002
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All Trademarks and service marks are held by their respective companies.
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